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  <title>Document</title>
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  <script>
    // 数组
    let arr = ['nch', 'lmf', 'lcx', 'xw', 'tlj']
    // 拿取全部
    // console.log(arr)
    // 拿取单个  数组名[索引]，索引从左往右，取值从0开始
    console.log(arr[3])
  </script>
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